

■i^ 



I 





I-. I 



11 



232 HULLETIN :il, UNITKD STATICS NATIONAL MUSEUM. 



iiieiices jiist below tlie braiicliitc and extends aloii^j the side of the ab- 

 domen parallel with the superior band, to nearly opposite the vent. In 

 some specimens a similar band extends from the viuit alonj; the me- 

 dian line below to the end of the tail, but this is frequently wanting- 

 More frecpiently the dermal keel and border on the superior edge of the 

 tall is .yellow, and this color is sometimes prolonged on the median lino 

 of the back for the posterior half or more of its length. The belly lias 

 rather large, more or less longitudinal yellow spots; and the ground 

 color between the lateral bands is similarly but less coarsely spotted, 

 except oil the tail, where the spots are dense. The fore limbs are yel- 

 low, wilh a brown tinge. 



The braiieliia' of this species display partial or entire abortion in a 

 larger i)r()port ion of individuals than in the ISlrcn laccrtina. An ei»i- 

 dermal sheath may inclose the tibrilla' on the external side only, or on 

 the external and internal sides. In ten specimens live have the epi- 

 dermal covering on both sides, three have the tibrilhe free at the lower 

 edge of thebranchia, and iii two the fimbria' are free on the entire pos 

 tcrior face. Sometimes the first brancliia is ihclo.sed in a distinct sheath 

 from the other two, and sometimes all are distinct. The insheatliing 

 mend)rane may l»e (continuous at the inferior edge of the branchia with 

 the epidermis of the throat. In this ca.se a small fissure remains, cor- 

 responding with the one on the pharyngeal wall. 



This sitecies is .so far only known from Georgia ami Florida. From 

 the latter State 1 have received it from Volusia. 



rsciidohrintchus fhialiis Lccoiitt'. 

 ]!K.SE1!VI'; SKKIKS. 



*«' 



Ililllllii'l. ^<]>t■l•. 



7010 

 rid.jl 

 7o:o 



10 



L.i.jlity. 



t li('iii)4hi . 



Wli..|i 

 oll.'i'tnl. 



Kidiii hImhii n ii'ivtil. 



Natiirr 111' 

 spiiiiiirll. 



I 



ISV. Mcoliiili.' 



Iili. 1, li-r.1 Dr. W. L. .IdiK.s l)(i. 



I Do. 



I 



.tiunit Dmn(!^ril, IfcOI. 



salii:ntia. 



I.iiiirciili, 17(1"'. 



. osTKoi.oav. 



Supraoccipital, basioccipital, intercalary, supratemporal, and post- 

 frontal bones wanting. Fiontals and parietals connate; prefrontals 

 present; nasals wanting or rudiniental. \'omers and palatines pres- 

 ent, distinct from each other, the latter inclosing the internal nares and 

 joining the pterygoids. IMaxillaries, ])r(Mnaxillaries, and ethmoid pres- 

 ent. 



