624 



A NEW STICKLEBACK— KENDALL. 



VOL. XVIII. 



compressed, with live lateral dermal plates anteriorly conuting from 

 pectoral fiu, none posteriorly^ : caudal peduncle short, naked, not keeled ; 

 innominate bone lanceolate, its width about three times in length; ven- 

 tral spines rather long, about one and three-fifths times in head, ser- 

 rated above and below, a strong cusp at base on both upper and lower 

 edge. 



Color in life grass green, mottled and finely punctated with black 

 on top of head and back; sides of head and body golden, with dark 

 blotches; breast silvery, ventrals scarlet. In alcohol the back becomes 

 smoky black, the mottling and black dots more distinct, the golden 

 hue of the sides fades, becoming more or less silvery, the dark blotches 

 more pronounced. 



Type. — No. 47589, U.S.jST.M. ; a specimen ly^y inches long, caught about 

 4 miles off Seguin Island, Maine, September 9, L895; cotypes Kos. 

 47590 and 47591, U.S.N.M. 



Measuremenls of Gasterostens gladiuncultis. 



For purposes of comparison, measurements of G. bispinosus taken in 

 the same locality at the same time are here given : 



Measurements of Gasierosfeus bisinnosns. 



'This specimen ditfers somewhat from the typical form and approaches G. bispinos^is in having 

 lateral dermal plates the whole leiigtli of the body (the last 12, however, being very small), and hav- 

 ing a very slight keel on the caudal peduncle. In' other respects it is like the typical form. 



