1898.] NATURAL SCIENCES OF PHILADELPHIA. 343 



men, from Canary Islands, 30 cm. long, exclusive of caudal; col- 

 lected by O. F. Cook. This well-marked species is nearest to Um- 

 brina coroides Cuvier & Valenciennes. The latter has, at all ages, 

 well-marked black cross-bands. 



Family POMACENTRIDJE. 



36. Chromis chromis (Linnaeus). 

 One specimen. 



37. Abudefduf luridus (Broussonet). 



The two specimens of this species agree perfectly with the genus 

 Abudefduf as defined by Jordan and Evermann, except that the 

 teeth are not emarginate. The front teeth are truncate and those in 

 the sides of the mouth rounded. This species agrees in this regard 

 with Stegastes imbricatus Jenyns, but in the genus or subgenus Ste- 

 gastes, the snout is fully scaled. 



Family LABRIDJE. 



38. Centrolabrus trutta Lowe. 

 Two specimens. 



39. Diastodon scrofa (Cuvier & Valenciennes). 



Two specimens. 



40. Sparisoma cretense (Linnaeus). 

 Four specimens. 



41. Thalassoma unimaculatum (Lowe). 



Head 3 J ; depth 3 J ; eye in head 5i, in inter-orbital width 1| ; 

 snout in head 2|. D. VIII-13 ; A. III-ll ; scales 2 to 3-26 to 29 

 -9 to 10, before D. 6. Body-color (in spirits) olive-gray ; perpen- 

 dicular, violet-black or reddish-brown streaks, extending across 

 centers of scales, two-thirds down sides of body, and alternating with 

 white streaks which extend to ventral surface; crossing these are 

 faint, longitudinal, white streaks, extending along each row of scales 

 and sometimes giving body a mesh-work appearance ; top of head 

 and snout black or violet ; a more or less distinct black stripe from 

 eye to near posterior edge of opercle ; pectorals with a small, black 

 spot superiorly in axil, or not, darkened at tip or not ; outer rays of 

 caudal extended along and darkened ; basal one-third of anal 

 violet, the outer two-thirds white ; a black spot on the back at each 

 side of dorsal at bases of second to fifth soft rays ; dorsal with a 

 broad, dark-violet stripe along its whole length, leaving a narrow, 



