( 



NATURAL SCIENCES OF PHILADELPHIA. 15 



the scuta tinged with green. Suture between sternum and episternum well 

 marked. Legs of anterior portion of body, a dirty light yellow, gradually 

 darkening as they approach the anus. 



Hab. St. Jago, Cape Verde Islands. Dr. J. M. Somerville. 



S. testacea, nobis. 



S. testacea, segmento cephalico parvo, prebasali nullo, basali maximo : 

 dentibus 6, intimis duobus utrinque latis coadunatis, externo sejuncto triangu- 

 lari ; antennis 17 articulatis ; pedibus postrernis robustis, basali articulo multi- 

 spinoso ; appendicibus analibus lateralibus, punctatis, rufis, singula 4-6 spinis 

 apicalibus et altero marginale. Long. unc. 5. 



First segment of body much the smallest. Femoral joint of posterior pair 

 of legs flattened above; inner surface and margin with from fifteen to twenty 

 small black spines ; inferior surface with from ten to fifteen; terminal angular 

 process with from six to eight. 



Hab. Unknown, 



S. porphyratainia, nobis. 



S. testacea, capite antennisque rufis ; segmentis, (postremo excepto,) antice 

 et postice nigro-purpurea late marginata ; pedibus luteolis ; deate mandibulari 

 magno, dentibus labialibus 10, nigris ; antennis 20 articulatis; pedibus pos- 

 trernis robustis, basali articulo margine exteriore vix elevato, margine interiore 

 spinulis 5, processu angulari elongato, trifido vel quadrifido, superficie inferiore 

 spinulis 9 triplici serie dispositis ; appendicibus analibus lataralibus alte punc- 

 tatis, singula spinis apicalibus 4-5 et altero marginale armatis. Long. unc. 4-75. 



The last dorsal plate has its lateral margins elevated and its posterior tinned 

 with purple. The posterior border of the large basilar segment of the head 

 has also a narrow band of purple. The broad bands which ornament the seg- 

 ments of the body extend down somewhat upon the sides; in the day time they 

 have in some lights a slight greenish reflection. This species is allied to S. 

 tigrina^ewp.; but, besides the peculiar coloration, it differs in the following 

 particulars: In the number both of joiuts of antennae and of labial teeth in 

 the scarcely elevated margin of femoral joint of last pair of legs, in greater 

 length of this joint compared with tibial, in two of the series of spines on in 

 ferior surface of the joint being parallel, in the robustness of posterior pair of 

 legs, in greater number of apical spines to lateral anal appendages and other 

 particulars. The antenna? appear to have been tipped with white. 



Hab. India. 



Observations on Cottus Copei, Abbott. 

 BY CHAS. C. ABBOTT. 



Having received a living specimen of the above named species, I deem it 

 necessary to make a re-diagnosis of the species, as the original specimen hav- 

 ing been an alcoholic one, and somewhat distorted, led to several errors 

 which it is important to correct. 



This species is closely allied to Cottus viscosus, Hold, and C. Frank- 

 linii, Agass., but differs essentially from the former^ the facial outline 

 from the eye, making a much less abrupt curve ; thus giving the snout greater at- 

 tenuation. In the mouth being more deeply cleft, and much more obliquely. In 

 the body being strictly cylindrical, and not subcylindrical. It differs from C. 

 Franklinii, in the tips of the pectorals overreaching the anterior margin of 

 the second dorsal. In the anterior margin of thejirst dorsal being farther distant 

 from the extremity of the snout. In the body, as it differs from viscosus. The 

 proper diagnosis will then be 



Cottus Copei , Abb. Corpore cylindrico. Extremitatibus pinnarum pec- 

 toralium porrectis ad anteriorem dorsalis secundse marginem. Pinnis ventrali- 

 bus snb pectorales et ante dorsalem anteriorem, insertis. 

 1861.] 



