266 OETHOPTERA. 



All the specimens examined by Mr. Rebn as indicated in his reference to this species 

 (loc. cit.) and by the present writer vary somewhat from the brief diagnosis given by 

 Saussure. It is barely possible that they may belong to still an additional species to 

 those under consideration in the present wurk. 



2. Proctolabus gracilis, sp. n. 



This insect is slightly smaller and much more graceful than the preceding species. It also differs from it in 

 having the pale longitudinal lateral line of the pleura continuous across the lower edges of the pronotum, 

 the cheeks, and along the anterior edges of the eyes to the base of the antennae. The hind femora are 

 ferruginous externally and red internally, with a pale testaceous, praegenicular fascia and slightly 

 infuscated knees. The supra-anal plate is broadly rounded apically and provided with four raised black 

 tubercles on the basal half, the outer ones being slightly transverse and situated at the termini and sides 

 of low, pale testaceous carinae which border a shallow median sulcus. The cerci are rather strongly 

 toothed, and edged above and below with black. The abdomen is testaceous, and has its apex but 

 little enlarged. 



Length of body, c? , 20 ; of antennas 11*5, of pronotum 3, of tegmina 14, of hind femora 10 millim. 



Hab. Mexico, Amula in Guerrero, 6000 feet (H. H. Smith). 



This species approaches P. mexicanus, Sauss., quite closely in the structure of the 

 supra-anal plate, but otherwise seems to be very distinct. The type was found in 



August. 



3. Proctolabus brachypterus, sp. n. (Tab. III. figg. 19, 19 «, <?; DelUa 



meocicana, Tab. III. figg. 14, 14 a, $ .) 



About as large as, or a trifle larger than, P. mexicanus, but differing from that insect in the much shorter 

 tegmina and wings, and in the absence of the reddish tinge on the abdomen and cerci. The present 

 species is also much more closely and profoundly punctate than is P. mexicanus, and the hind femora 

 have the upper and lower outer edges decidedly marked with pale testaceous or dirty white, at least m 

 the male. The hind femora of the other sex ( 5 ) show traces of dusky bands, both internally and 

 externally. 



General colour of <5 dull olive-green above, the anterior and middle legs, and the femora of the hind pair, 

 also olive-green ; pleura, lower half of sides of pronotum, cheeks below the eyes, and the face anterior 

 to the latter as far as the base of the antennae, dirty ivory-white ; venter flavous ; hind tibiae dull 

 reddish-purple. The § is almost uniformly dull brown, with a slight tinge of olive on the tegmina and 

 pleura, and its antennae are faintly annulate with testaceous. The supra-anal plate of the <$ lacks the 

 four raised tubercles present in both P. mexicanus and P. gracilis, while the tip of the cerci is slightly 

 emarginate, so as to give these members an appearance of being gently furcate. 



Length of body, J 23, $ 3i ; of pronotum, tf 3'35,. $ 5 ; of tegmina, c? $> 9-10; of hind femora, 

 cS 11, $ 12-13 millim. 



Hab. Mexico, Tres Maries Is. [1 $ ] (Forrer), Jalisco [2 <$ s and 1 $ ] 

 (Schumann). 



It is hardly probable that the insects described as the sexes of P. brachypterus 

 could belong to distinct species, although the uniform brownish colour and traces of 

 fuscous thigh-bands in the female specimens are so different from the male coloration, 

 The Tres Marias Islands example also varies a little from the females coming from 

 Jalisco. The insects ( 6 and $ ) from the latter locality are made the types of the 

 species P. brachypterus. 



