114 REPORT ON ZOOLOGY, MDCCCXLIII. 



latus (id.). ..Gray, with brown transverse bands; 4j inch. D. 31; A. 32 ; 

 P. 14. Tahiti. S. crinitus (id.) Gray, belly and opercular spot black, two 

 cirrhi above the eyes, no anal fin, pectorals very small ; 3 inch. Patagonia. 



PLECTOGNATHI. 



GYMNODONTES. Diodon. fuliginosus, De Kay. Olive-green above, orange 

 beneath, covered with triangular spines ; three spines above each eye, caudal 

 fin lanceolate ; 2 inch. D. 14 ; P. 22 ; A. 8. D. verrucosus (id.) With round- 

 ish scuta, from which spring flexible spines ; 1^- inch. D. 11; P. 22; A. 10. 

 New York Harbour. 



Under the name of Acanthosoma, De Kay (1. c.) distinguishes a new genus, 

 which differs from Diodon in this, that the dorsal, caudal, and anal fins arc 

 united. One species, A. Carinatum (Diodon carinatus, Mitch.), 1 inch long. 

 D. +; C. +; A. 52; P. 12. 



Tetrodon aerostations, Jeuyns (1. c.). Resembling lineatus, Bl., but wanting 

 the lateral line; back and upper part of sides spotted; 2 inch. D. 11 ; 

 A. 10 ; P. 11. T. impltttiis (id.). Olive colour, with white circular spots ; 

 nares tubular, forked; 5 inch. D. 10; A. 10; P. 16. Indian Ocean. 

 T. (innuJcitiis (id.). Dark brown above, with black circular spots ; nares cylin- 

 drical, with two lateral openings ; 9 inch. D. 8; A. 7 ; P. 15. Galapagos 

 Islands. T. (/ngusticeps (id.). Dark green above, two cirrhi in the middle of 

 the back, nares tubidar, with two lateral openings ; 9 inch. D. S ; A. 7 ; 

 P. 15. Galapagos Islands. 



ScLEUODERMi. Ostmclon undecim-uculratus, Smith (Illust. South Africa, 

 16). Quadrangular; five spines on the back, six on the sides of the abdomen. 

 Cape of Good Hope. 



From the genus Ost ration De Kay separates a genus, LactopJnys, in which 

 he places 0. Yalei, Storer, and 0. sexcornutus, Mitchill, besides a new species. 

 The body is triangular, with strong spines in front of the anus, directed 

 backwards ; spines above the eyes. In the new species, L. camelinus, the 

 back is elevated into a spine, besides eight spines ; 3| inch. D. 9 ; P. 10 ; 

 A. 10. 



Balistes fuliffinosus, De Kay. Caudal fin doubly emarginate ; a single spine 

 between the first and second dorsal fins ; 12 inch. D. 2. 1. 28 ; P. 14 ; V. 7; 

 A. 26. New York Harbour. 



MoiKH-tnilhiis si-lifer, DC Kay. Some of the anterior rays of the dorsal fin 

 elongated into fdaments; 7 inch. D. 1.33; P. 13; A. 33. New York 

 Harbour. 



Aleuteres velutinus, Jenyns. Light brown, with four darker longitudinal 

 bands, rough; 8 inch. D. 2. 33; A. 31. George's Canal. 



