Mr. A. Murray's Monograph of the genus Catops. 391 



described, and all the spinules are more or less connected toge- 

 ther or webbed by it. 



Royal College of Surgeons, October 14, 1856. 



DESCRIPTION OF PLATE XV. 



Fig. 1. The perfect young O. rosula, magnified 100 diameters. 



Fig. 2. The under surface of disk as seen when alive, magnified 100 diam. 



Fig. 3. The spines of young O. rosula from the disk. 



Fig. 4. Palmate or basal spines of the ray. 



Fig. 5. The reticulate spines. 



Fig. 6. The hooked spines from the extremity, and a portion of the under 



surface of the ray. 

 Fig. 7' The spines of young O. rosula, showing animal membrane. 

 Fig. 8. Perfect spine of adult 0. rosula, magnified 100 diam. 



XXXIII. — Monograph of the genus Catops. 

 By Andrew Murray, Edinburgh. 



[Continued from p. 318.] 

 Exotic species. 



38. C marginicollis, Lucas. 



Catops marginicollis, Lucas, Expl. de TAlgerie, Anim. Art. ii. p. 224. 

 pi. 21. fig. 4. 



"Capite nigro, granario ; thorace subgranario, nigro, Fig- 39. 

 ferrugineo marginato, angulis posticis subacu- 

 minatis; elytris nigris striatis subtilissimis con- 

 fertissime punctulatis ; corpore infra nigro, sub- 

 tiliter granario; pedibus antennisque ferrugineis. 



"Long. 2J lin., lat. 1^ lin. 



" The head is black, granulated, and scarcely pu- 

 bescent. The maxillary and labial palpi, as well as the 

 antennse, are entirely ferruginous. The thorax pubescent, very 

 lightly granulated, black, with the lateral margins ferruginous ; 

 it is very gently convex, rounded on the lateral parts, with the 

 angles on each side of the base less projecting, and a little less 

 acuminate than in C. celer, Luc. The scutellum is black, gra- 

 nulated. The elytra, of the same colour as the scutellum, 

 pubescent, have a very fine and very dense punctuation; they 

 are striated, and the strise are sufficiently well marked. All 

 the body below is of a deep brown, and is very finely granulated. 

 The legs are entirely ferruginous *.'' 



This species was taken by M. Lucas at Oran, in the west of 

 Algeria, under stones, in the end of February. 



* Lucas in loc. cit. 



