84 <~>vit cAitciNOLoaicAh rjtiKNDs. 



llu) shrimp, ote. (Miicrurn). An intormodiato typo 

 in roproHentcd by tlio hormit-cmbB, wi1.li sonio of 

 wlioHu liabita wo littvo alroiidy bocoiiio lu^quniiitod. 



'I^bisro ai'o two HpocictH of liddUir found on our 

 coast, mucli rtiHonibling ono aiiotlior in both color 

 and ornuMicjutatioM. Tlio iiioro (toinnion form {(ld<i- 

 mnus voador) has a Hinootli and shining carapa^cd, 

 whoruuH in tliu m:c.in\{\(^(}d<iniii:ii.s mi:iiii.,r) tlic. (iurapaiui 

 iH minutely granulatud and in ])art tuborculatod ; 

 in hoth Lhc back appears improHHod with a iigiiru 

 much like lliat of tlio lotlcr 11. 



The second npccios, which apfxiars to be a vogo- 

 tablo feeder, is much tlio larger of the two, and il,H 

 burrows are not infro(piontly one and a half inobc^s 

 across, or ovun mor(!. It inhabits Iho cHtuarino re- 

 gion, in immediate proximity to frcHb water, rather 

 than the tidal flats, and, indued, it appears to be 

 able to get along for wcuIvh, or even months, with- 

 out aliHolutcdy recpjiring Halt water. 



In excavating, the fiddlers throw or push up the 

 pellets of moist eartb by means of their anterior 

 walking legs, depositing their burden usually at 

 some little diHtanee from tbe mouth of Ibe burrow. 

 At tlie ap|)roaeb of wint<;r Ihey close up the domi- 

 eiliary apertures, and pass into a eondilion of toi-- 

 pidity until tbe advent of H[)ring. 



Leaving to their (!a[»er8 the noiHolesB musicians 

 of the shore, let us examine somewhat tnore closely 

 tlie formH that nature has fuHbioned witb a little 

 nearer ap[)roaeh to symmetry. The 'regular' 

 crabs, in a general way, look very iinjitb alike, dif- 

 fering seemingly only in tbe jtroportion of parts 



