230 bulletin: museum of comparative zoology. 



182. Amphelictogon juvenis, sp. nov. 



Tyiie. — M. C. Z. 4,502. Cuba: Guantanamo, Belona Oriente, 

 January 16, 1914. C. T. Ramsden. 



The dorsum in the middle and caudal regions dull yellow of a light 

 brownish cast, the brown pronounced in the anterior region, particu- 

 larly at the sides, leaving a lighter median stripe. The middle and 

 posterior regions showing a dark median longitudinal stripe. 



The head shows a deeply impressed vertigial sulcus. 



First plate with keels high, giving plate appearance of being nearly 

 horizontal, the median region being but weakly convex: anterior 

 and lateral margins forming an even semicircle. Lateral serrations 

 sharp and distinct from the second keels caudad to the eighteenth 

 inclusive, the teeth of the middle region especially large. Tooth on 

 caudad margin of keel distinct, low and obtuse anteriorly, but acute 

 and conspicuously projecting in posterior region {e. g., on fourteenth, 

 fifteenth, and sixteenth keels). Anterior keels in general high, 

 insertion becoming progressively lower in going caudad. Legs more 

 slender than usual. 



Process of anal tergite widely surpassing the strongly marginate 

 anal valves. 



Length near 16 or 17 mm.; width, 2.9 mm. 



While the type of this species is not mature, consisting of but 

 nineteen segments, it is sufficiently distinguishable, particularly 

 because of the strong lateral tooth on all keels from second to eigh- 

 teenth inclusive, a feature not shared by any other species. 



183. Amphelictogon maculatus, sp. nov. 



Type.— M. C. Z. 4,503. Paraiypcs.— l^i. C. Z. 4,504. Cuba: 

 Los Hondones, October 25, 1914. C. T. Ramsden. 



This species presents a seemingly very characteristic color-pattern 

 which is uniform in the several specimens, all of which are unfortu- 

 nately females. In the middle and posterior regions of the body the 

 metazonites are pale, dilute brown or chocolate over a yellow ground 

 with the keels and mid-dorsal region clear yellow, but on each prozo- 

 nite each side of the middle dorsally there is a transversely elongate 

 spot of deep chocolate and on the side below the level of the keels an 

 entirely separated similar spot. The first dorsal plate has two dark 



